After reviewing the Ethos site (all of their links are not even working with "Error 404: NOT FOUND!"), and after reviewing the responses posted here, I am totally against it. My vote is NO. While you need advertising, it should be for useful products that actually work.

This appears as a conflict of interest to the site. Consumers Review for example does evaluations of all types of products. However, they do not take any money from companies for advertisements since it could appear the review was effected by money from those companies.

I suggest staying clear of any type of advertisement that has to do with oil or gas.

The creditability of this site goes way down when unproven claim fuel additives are pushed/pop-up advertised here. Keep them away! Fuel additives only clean the fuel system or raise octane. I used to own an auto parts store and sold many fuel additives. I would not sell one that wasted the customer's money, or one that I would not use myself.

I have been using fuel additives for years, and all I have noticed is they clean the carb. or the injectors which ever is used by your car. The only real enhanced fuel additive that helps with fuel savings is eeFuel or F2-21 . This was used in California to cut the emissions on the cars, by separating the clumps of fuel and letting it burn the fuel better. At least I have tried it and went from 16 to 20 miles per gallon in the F150 Ford FX2 Pickup

A certain amount of endorsement is implied when you allow an advertiser on your site, by virtue of the type of site that you are. I would think that you would only accept advertising from companies that the management of GasBuddies approves. I have followed several links from ads on your site and would be very disappointed in the site if the companies advertised here were fraudulent or gained a bad reputation. I don't know about this product or company, but expect that YOU would. Please don't lead us in any wrong directions.

If the product is not illegal or immoral than it's just an ad. Most of what is advertised does not interest me. There is no reason to treat this product differently than anything else that is for sale.

I tried Ethos in both my VW Passat and BMW740i. The results were mixed. I have a stretch of road 7 miles long, speed limit of 50mph with no stops. I use this to test my gas mileage. Both vehicles compute their gas mileage while driving. The Passat showed no increase using Ethos and the BMW showed an increase of 3%, maybe I had a tail wind that day? I would not recommend that you use them as an advertiser.

I have to say that there will always be ads. The ad dollars are what pay the bills for websites. Just cause there is an ad on a website does not mean that you need to buy it. Just do the research on the product before you buy it.

I thought it was lame that gas buddy carried ads for something that's been known to be a scam for ages, but does manage to suck desperate people in - and really, that the ads are on this site does imply credibility.

Then I learned about the link between this (and other MSM scams) and scientology, and it's gone from shameless to downright evil in my mind. Absolutely they should be dropped as an advertiser.

Folks, how naive are we? This kind of scam--and that's what it is--has been going on forever, certainly in all of MY 66 years of life. If there were some simplistic method or add-on that would REALLY result in a substantial increase in fuel mileage with no damage to engine or ancillary equipment like sensors, don't you think a CAR COMPANY would use it and claim the higher CAFE numbers, etc., for their advertising and on the window sticker? In honesty, I've tried a couple of additives and add-ons (cold electricity to non-firing spark plugs is one example--sheesh!) with nothing but negative results. Either they were a waste of money, or worse, they caused some engine or sensor damage.There ain't no easy, simplistic piece of equipment or engine additive that will magically tune the engine or otherwise improve fuel mileage, regardless of claims. Drive more slowly; gentle on the gas and brake, coast a lot, inflate your times 5-8 lbs above recommendation (but not higher than the max listed on the sidewall!), keep the air filter and fuel filter up to date, change oil, don't warm up the car more than 30 seconds, etc. Those are your best bets.

I tried Ethos and was really disappointed. I got 1 mpg improvement over 4 weeks. Not really worth the cost for me. Or the trouble. Had to reset my fuel injectors 4 times by disconnecting the battery...

I have seen both positive & negative on another topic for this product. Some people say it works & others say it does not. I have thought about but not sure if I want to try it. I may start using Amsoil again before trying this product.If the moderators feel it is a good advertiser, so be it.

I actually have used the product and it worked for me. I had the opportunity of driving to Charlotte and back from the Albany area at a time when I was using Ethos. My results were pretty good. Interesting to me was the results Varied from one gas company to next. I purchased Chevron gas in Salem Va and my mileage went from 23 MPG to 26 MPG. Normal for my vehicle is 20. Still, all in all, the product worked well for me.

I bought Ethos in May. Could give you the long version, but who would read it? No change in gas mileage. Called 4 times to get my double back guarantee; person on phone said I would get call back next day to report my mileage log. No call backs, instead, received 21 emails telling me I didn't reply in 24 or 48 hours so my ticket was closed. Responded to each email. Finally got a reply and a $79.95 refund posted to my credit card account, but no double back $. Also after several attempts to get gas voucher promised with buying Ethos (one excuse was the person in charge had to attend his mother's funeral so he was behind, another excuse was they were having trouble with the provider of my email account). Finally coupon registration came through email--now I have to pay a 100% guarantee refund on a $5 deposit in order to get my $25 gas voucher. No way, Jose. Online discussion on Ethos website, one person wrote he had to replace his oxygen sensor due to Ethos.Bottom line--GAS BUDDY you are not a BUDDY to allow advertiser pop ups like this one.

I really have not heard any "real" positives about this. If it is a SURE thing to help consumers that is one thing, but don't let this be a spot where people are taken, especially in a time when $ is so precious.

If everyone is allowed to post opinions then if there are any problems with a product people can send out an alert. If a business is told they can't give an opinion then we could miss out on something that is really great. So it's 6 of one and 1/2 doz. of another. I have read the reports and won't get the product.

According to report from the Ohio Better Business Bureau, not a single company that claims to have a fuel additive to increase fuel mileage can prove that their product actually works. In many cases the companies are being taken to court over the claims.

Just because a product is approved by the EPA, does not mean it works. The EPA only certifies that the product does not harm engines or cause the creation of additional pollutants.

There's a significant difference between advertising and endorsing. I don't think many people here will assume that GasBuddy is endorsing any of the products displayed on its website. Yes, some will, but I would think that the majority of members are intelligent enough to know the difference.

The missing choice for this question is "I don't care" or "It's not for me to say" (both significantly different than Not sure/Don't Know.

If management thinks tht Ethos Fuel Enhancer is a legal and legitimate product, then it's a business decision to have them as a client or advertiser. After all, I might find fault with the Discovery Card, or with INSWeb, or with eBay who are advertisers, because I might not believe they do what they claim to do.

Acceptance of an advertiser is best left to management and those in the employ of management (legal staff and others), not to a bunch of people who join a website anonymously, many of who are anonymously concerned with getting points or getting a new icon or "new car" as quickly as possible.

I tried it and it doesn't work. 0 difference. The first shipment got damaged in transit and I had to call to get it replaced. Fortunately I found the guy's cell# online and he was helpful. However, his customer service people were not very responsive. I did get a replacement, but tried it and it made 0 difference. He sent an email claiming that this is a known issue and you have to disconnect the battery for a while and then reconnect it, repeating a few times for the first month. Apparently this resets the computer memory or something in the fuel injector. I don't want to have to mess around with this kind of thing multiple times to force it to work. It should work from the get go...

NO! Overpriced hoax. Newer cars are already calibrated to work this out. Plus, in CA we already pay for it in the summertime blend.

Drive slower and you'll save $$$. Plus, consider the cost vs. how much more gas you could have bought? The $25 rebate is a PITA and a lot of work. Not worth it and not worth any special advertisement on site.

1. I guess ads are ads and revenue. I would put a significantly sized disclaimer on this product. Do the same for any other product claiming to enhance performance, mileage, horsepower etc.

2. Having lived in California for a long time (74-87) and having read the Ethos materials I can assure you I did NOT get better mileage on my cars in general. I moved there with a Datsun that I still owned when I left. Got the same mileage in 1974 in CA as in 1973 in NM and the same (or worse) in CA in 1985!

Don't get the essence of the claim by Ethos. Smog is better but mileage and engine lifetime/performance is either the same or worse in my experience. I'm not buying.